using System;

namespace Org.BouncyCastle.Asn1.Crmf
{
	public class Controls
		: Asn1Encodable
	{
		private readonly Asn1Sequence content;

		private Controls(Asn1Sequence seq)
		{
			content = seq;
		}

		public static Controls GetInstance(object obj)
		{
			if (obj is Controls)
				return (Controls)obj;

			if (obj is Asn1Sequence)
				return new Controls((Asn1Sequence)obj);

			throw new ArgumentException("Invalid object: " + obj.GetType().Name, "obj");
		}

		public Controls(params AttributeTypeAndValue[] atvs)
		{
			content = new DerSequence(atvs);
		}

		public virtual AttributeTypeAndValue[] ToAttributeTypeAndValueArray()
		{
			AttributeTypeAndValue[] result = new AttributeTypeAndValue[content.Count];
			for (int i = 0; i != result.Length; ++i)
			{
				result[i] = AttributeTypeAndValue.GetInstance(content[i]);
			}
			return result;
		}

		/**
		 * <pre>
		 * Controls  ::= SEQUENCE SIZE(1..MAX) OF AttributeTypeAndValue
		 * </pre>
		 * @return a basic ASN.1 object representation.
		 */
		public override Asn1Object ToAsn1Object()
		{
			return content;
		}
	}
}
